Test for manufacturing litharge



(No Model.) v

W. H. WILLIAMS. TEST FOR MANUFACTURING LITHARGE..

Patented July 20,1897.

/VVENT By A() una ATTHNEY.

UNTTED STATES PATENT OFFICE.

IVILLIAM H. IVILLIAMS, OF SHARPSBURG, PENNSYLVANIA.

TEST FOR MANUFACTURING LITHARGE.

SPECIFICATION forming part of Letters Patent No. 586,783, dated July 20,1897.

Application filed March l0, 1897. Serial No. 626,740. (No model.)

To @ZZ whom t may concern:

Be it known that LWILLIAM HWILLIAMS, a citizen of the United States,residing at Sharpsburg, in the county of Allegheny and State ofPennsylvania, have invented certain new and useful Improvements in Testsfor Manufacturing Litharge and Reiinin g Metals; and I do declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same, reference being had to the accompanying drawings,and to the figures of reference marked thereon, which form a part ofthis specification.

This invention relates to certain new and useful improvements in testsfor the manufacture of litharge, in which- Figure l is a side elevationand part section of the furnace, showing test in position with leversand frame for supporting it. Fig. 2 is a cross-section showing the same.Fig. 3 is a part section and side elevation of the test. Fig. l is apart section and plan of the test. Fig. 5 is a longitudinal sectionalView of the inner end of the twyer by which the metal is supplied to thetest. Fig. 6 is a similar view of the outer end thereof. Figs. 7 and Sare cross-sections on the lines a; 9c and gj ly, respectively, of Figs.5 and 6.

In Fig. l, l is the coil test. 2 is the frame for supporting it.

3 and 4 are levers for raising or lowering test; 5, teggles by whichlevers are con nected.

6 7 8 are points where levers and frame are fulerumed.

9 is the inlet, and l0 the outlet, or vice versa, of the coil test; ll,the aperture in furnace through which metal is admitted to the test; l2,the twyers for distributing the blast over the surface of the metal inthe test.

13 is a peep-hole; la, the firing-chamber; l5, the ash-pit; IG, the iiueto smoke-stack; I7, the pipes in which the water circulates; 18, thebands by which the coils are bound together.

I9 is a lip or gutter through which the litharge flows; 20, the lining.

That others may fully understand my invention I will briefly state thatheretofore in the manufacture of lithargc and the rening of metals themetal is placed upon an oval slightly-excavated disk or test, made bybeating pulverized bone-ash, formed into a paste with water, into a moldthe sides of which consist of an elliptical band of iron and the bottomof strips ef sheet-iron placed at short distances apart.

rlhe test is of such a size as exactly to fit an opening in the floor ofa reverberatory furnace, where it is placed and adjusted to the level ofthe floor. On one side of the test the fireplace is situated, andexactly opposite the chimney, while at one extremity of it a blast-pipeis placed and at the other a vertical hole is made, communicating with agutter leading from the test. The furnace is now lighted and shortlyafterward the blast is turned on. The lead fuses and combines withoxygen, and the resulting oxid melting also forms a stratum which swimson the surface and which is driven by the blast along the gutter andthrough the vertical hele into a receptacle below. This test isexpensive and of short duration.

In my invention I propose to construct a pipe-test coiled as shown inaccompanying drawings or any other suitable shape, banded together bybands and lined with asbestos cement or any other suitable material, thecoil to have an inlet and an outlet by which a current of water or othersuitable liquid, air, or gas of a required temperature may becirculated, thus preventing the pipe and lining from becoming too hotand the metals and litharge from penetrating the test, the test to besupported by framework, of wood or other suitable material, and adjustedby one or more levers for the purpose of lowering and raising the test.I also provide one or more twyers made of asbestos or asbestos cement,or iron or other material coated with asbestos. In using asbestos fortwyers I have twyers that will ontlast any other, and the most desirableshape is as shown, protruding through the furnace with the flattened endpointing over the metal in the test l.

Having thus fully shown and described my invention, what I claim as new,and desire to secure by Letters Patent, is-

l. The combination with the furnace, of the pivoted frame locatedtherein, the test consisting of the spirally-eoiled pipe for thecirculation of liquid or fluid, the ireproof nected with said pipe andthe pivoted levers Io twyers and the means for raising and lowerandtoggle-joint for raising,` and lowering` the ing said test,substantially as shown and detest, substantially as shown and described.scribed. In testimony whereof I affix my signature 2. The combinationwith the furnace, of in presence of two witnesses.

,the pivoted frame located. therein, the test l WILLIAM H. XVILLIAMS.

consisting of the spirally-eoiled pipe, the lin- Titnessesa ingtherefor, the ireproof tWyer-pipe for sup- ALEX. A. PATTERSON,

plying air to the test, the flreproof tWyer oon- H. J. LEVIS.

